CN102631837A - Integrated type sulfur-containing waste gas purifying device - Google Patents
Integrated type sulfur-containing waste gas purifying device Download PDFInfo
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- CN102631837A CN102631837A CN201210129510XA CN201210129510A CN102631837A CN 102631837 A CN102631837 A CN 102631837A CN 201210129510X A CN201210129510X A CN 201210129510XA CN 201210129510 A CN201210129510 A CN 201210129510A CN 102631837 A CN102631837 A CN 102631837A
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- sulfur
- desulfurization zone
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- containing waste
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to an integrated type sulfur-containing waste gas purifying device comprising a monomer sulfur precipitation region, an aerobic biological sulfur-removing region and an anaerobic biological sulfur-removing region, wherein the monomer sulfur precipitation region comprises a base, sulfur discharging pipes and tapered sulfur discharging hoppers, wherein a plurality of the tapered sulfur discharging hoppers are fixed on the upper surface of the base, and the sulfur discharging pipes are arranged at the bottoms of the grooves of the tapered sulfur discharging hoppers; the aerobic biological sulfur-removing region comprises an air aerator, an overflowing box, a circulating flow guide plate and an air baffle; and the anaerobic biological sulfur-removing region is sequentially composed of a biological packing layer A, a liquid distribution device A, a biological packing layer B and a liquid distribution device B from bottom to top, wherein a sulfur-containing waste gas feeding pipe is introduced at one side below the biological packing layer A, and a waste gas collecting opening is arranged at the top of the anaerobic biological sulfur-removing region. The integrated type sulfur-containing waste gas purifying device integrates sulfur-removing bacterial culture and waste gas sulfur removing, and can efficiently and safely finish the purification work of the sulfur-containing waste gas; and the integrated type sulfur-containing waste gas purifying device has the advantages of reasonable and simple structure, convenience in machining and convenience in popularization and application.
Description
Technical field
The invention belongs to technical field of waste gas treatment, particularly relate to a kind of Contiuum type purifying sulphur-containing waste device.
Background technology
Oxysulfide is that quantity is bigger in the present atmosphere pollution, a kind of gaseous contaminant that influence surface is wider.Oxysulfide source in the atmosphere is very wide, and nearly all industrial enterprise all might produce, and mainly is that the burning of sulfurous fuels (coal, oil) produces.Coal is first energy of China's economic development, accounts for about 70% of China's energy-consuming ratio, and sulphur content content is high in the coal in China, and higher sulfur content causes a large amount of SO in a large amount of fire coals and the coal
2Discharging.SO
2Existence aspects such as natural ecological environment, human health, industrial and agricultural production, building and material are all caused harm to a certain degree, SO in atmosphere especially
2With O
3, H
2O
2Generate sulfuric acid Deng through chemical reaction, finally form the pH value less than 5.6 acid rain, and acid rain all has direct and potential harm to health, the ecosystem and Architectural Equipment.Therefore, sulphur-containing exhaust gas must be through purified treatment before discharging.
Purifying sulphur-containing waste method commonly used at present has wet desulphurization, semi-dry desulphurization and dry desulfurization.Wet desulphurization is meant the solution that utilizes alkaline absorption solution or contain the catalyst particle, absorbs the SO in the flue gas
2Semi-dry desulphurization is to adopt the desulfurizer slurry of atomizing to carry out desulfurization; Dry desulfurization is meant and utilizes solid absorbent and catalyst not reducing flue-gas temperature and not increasing under the condition of humidity, removes the SO in the flue gas
2Wet type limestone/gypsum method is to use one of the widest fume desulphurization method at present, and the sulfur-containing smoke gas cooling back after the dedusting soon gets into the absorption tower, carries out gas-liquid at Ta Nei with lime stone slurry and contacts, the SO in the flue gas
2Be absorbed, at last from smoke stack emission.Yet the maximum shortcoming of this method is that equipment is huge, floor space big, investment and operating cost are high.
Compare with conventional method, bioanalysis removal sulfur-containing smoke gas has does not need high temperature, high pressure, catalyst, promptly is operation under the normal temperature condition, and characteristics such as reaction condition is gentle, simple to operate, energy consumption is low, recyclable elemental sulfur are the desulfur technologies that has development potentiality.The research proof, some microorganisms can be sulfide or H with the oxidation state sulfur reduction through the biological reducing effect
2S, and then, make sulfur-containing smoke gas be purified through biological oxidation process generation elemental sulfur, its chemical reaction reaction equation is:
2HS
-+O
2→2S+2OH
- (1)
2HS
-+4O
2→2SO
4 2-+2H
+ (2)
At present, biological desulphurization has obtained certain applying, but still exists problems and need to be resolved hurrily.How to guarantee the security (H of biological desulphurization
2Explosion limit wider range of S gas is 4.3%～45.5%V/V, in this scope, meets burning things which may cause a fire disaster and is prone to blast) be the difficult point of biological desulfurizing technology.Recently, have the researcher to find a kind of microorganism with simultaneous denitrification function, following reaction: 5HS can take place in them under anaerobic state
-+ 2NO
3 -+ 7H
+→ 5S+N
2+ 6H
2O, contacting of sulphur-containing exhaust gas and oxygen avoided in this reaction, can get rid of potential safety hazard.In addition, shown in equation 2, sulfide can be oxidized to sulfate and influence the productive rate of desulfurization under the excessive situation of oxygen, moreover how to guarantee that the effective operation of desulfurizing bacteria in the desulfurizer also is the difficult point of biological desulfurizing technology.The defective of these aspects is effectively solved as yet, has hindered applying of biological desulfurizing technology.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Contiuum type purifying sulphur-containing waste device, integrates desulfurizing bacteria and cultivates and exhuast gas desulfurization, the purification work of completion sulphur-containing exhaust gas that can highly effective and safe.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Contiuum type purifying sulphur-containing waste device is provided; Comprise elemental sulfur settling zone, aerobe desulfurization zone, anaerobic organism desulfurization zone, described purifier is followed successively by elemental sulfur settling zone, aerobe desulfurization zone, anaerobic organism desulfurization zone from the bottom to top; Described elemental sulfur settling zone comprises base, sulphur discharging pipeline, taper desulphurization bucket, and described base upper surface is fixed with some taper desulphurization buckets, and described taper desulphurization bucket bottom portion of groove is provided with sulphur discharging pipeline, and both sides, described elemental sulfur settling zone are fixed with reinforcement; Described aerobe desulfurization zone comprises air aeration device, spill box, circulation deflector, air register; Described aerobe desulfurization zone left side wall bottom is provided with the air aeration device; The middle part is provided with communicating pipe, is provided with spill box outside described communicating pipe, and described spill box top one side is provided with overflow pipe; Described aerobe desulfurization zone bosom is provided with the circulation deflector; Right side wall is provided with return duct, and described circulation deflector top is provided with air register, and described circulation deflector upper end tilts and be relative with air register; Left side, described aerobe desulfurization zone upper end is provided with air discharge ports, alkali lye input pipe, nutrient solution input pipe, dissolved oxygen probe successively, and the top, right side connects the anaerobic organism desulfurization zone; Described anaerobic organism desulfurization zone is followed successively by biologic packing material layer A, liquid distributor A, biologic packing material layer B, liquid distributor B from the bottom to top; Described biologic packing material layer A below one side feeds sulphur-containing exhaust gas and gets into pipe, and described anaerobic organism desulfurization zone top is provided with the gas sampling mouth.
Described elemental sulfur settling zone, aerobe desulfurization zone, anaerobic organism desulfurization zone volume ratio are 1: 4: 6～8.
Described taper desulphurization bucket tapering is 60 °, and bottom of device and base are 45 ° inclined-plane.
Described air register lower end level height is lower than overflow pipe 3～6cm, and described circulation deflector upper end level height is lower than overflow pipe 6～8cm.
Described biologic packing material layer A and biologic packing material layer B volume ratio are 1: 1.
Described liquid distributor A is 6～12cm with liquid distributor B apart from the distance on the biologic packing material layer B apart from the distance of biologic packing material layer A upper end, and the liquid level of end distance aerobe desulfurization zone distance is 20～30cm under the described biologic packing material layer A.
Beneficial effect
The present invention compares prior art, has following beneficial effect:
1) cultivation of desulfurizing bacteria and the exhuast gas desulfurization formula device that is melted into a whole is simple for structure, easy to process, is easy to be extended and applied;
2) the aerobe desulfurization zone of Contiuum type combines air register to stop contacting of anaerobic zone sulphur-containing exhaust gas and oxygen with the circulation deflector, efficiently solves the safety problem of biological desulphurization;
3) pass through the control aeration rate in the aerobe desulfurization zone, dissolved oxygen concentration that dissolved oxygen probe is surveyed is maintained between 0.08～0.10mg/L, impel H
2S gas transforms to elemental sulfur, and prevents the acidifying of reactant liquor, realizes the high-performance bio desulfurization of sulphur-containing exhaust gas;
4) liquid level that has realized nutrient solution in the bio-desulfurization device that is provided with of spill box is regulated;
5) the anaerobic organism desulfurization zone is designed to two-part cloth liquid and two-part interstitital texture, has realized the even distribution of spray liquid;
6) desulfurizing bacteria is with the H in the waste gas
2S is oxidized to elemental sulfur, recyclable sulphur resource.
Description of drawings
Fig. 1 is an overall structure cross section view of the present invention;
Fig. 2 is the profile vertical view of Fig. 1;
I. elemental sulfur settling zone II. aerobe desulfurization zone III. anaerobic organism desulfurization zone
1. reinforcement 2. sulphur discharging pipelines 3. taper desulphurization buckets 4. air aeration devices 5. spill boxes 6. overflow pipes
7. 11. dissolved oxygen probes are managed in communicating pipe 8. air discharge ports, 9. alkali lye input pipes, 10. nutrient solutions input
12. biologic packing material layer A 13. liquid distributor A 14. biologic packing material layer B 15. liquid distributor B 16. gas sampling mouths
17. sulphur-containing exhaust gas gets into pipe 18. air registers 19. circulation deflectors 20. return ducts 21. bases
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Like Fig. 1, shown in Figure 2, the present invention includes elemental sulfur settling zone I, aerobe desulfurization zone II, anaerobic organism desulfurization zone III, described purifier is followed successively by elemental sulfur settling zone I, aerobe desulfurization zone II, anaerobic organism desulfurization zone III from the bottom to top; Described elemental sulfur settling zone I comprises base 21, sulphur discharging pipeline 2, taper desulphurization bucket 3; Described base 21 upper surfaces are fixed with some taper desulphurization buckets 3; Described taper desulphurization bucket 3 bottom portion of groove are provided with sulphur discharging pipeline 2, and I both sides, described elemental sulfur settling zone are fixed with reinforcement 1; Described aerobe desulfurization zone II comprises air aeration device 4, spill box 5, circulation deflector 19, air register 18; Described aerobe desulfurization zone II left side wall bottom is provided with air aeration device 4; The middle part is provided with communicating pipe 7, described communicating pipes 7 outside be provided with spill box 5, described spill box 5 tops one side is provided with overflow pipe 6; Described aerobe desulfurization zone II bosom is provided with circulation deflector 19; Right side wall is provided with return duct 20, and described circulation deflector 19 tops are provided with air register 18, and described circulation deflector 19 upper ends tilt and be relative with air register 18; Left side, described aerobe desulfurization zone II upper end is provided with air discharge ports 8, alkali lye input pipe 9, nutrient solution input pipe 10, dissolved oxygen probe 11 successively, and the top, right side connects anaerobic organism desulfurization zone III; Described anaerobic organism desulfurization zone III is followed successively by biologic packing material layer A12, liquid distributor A13, biologic packing material layer B14, liquid distributor B15 from the bottom to top; Described biologic packing material layer A12 below one side feeds sulphur-containing exhaust gas and gets into pipe 17, and described anaerobic organism desulfurization zone III top is provided with gas sampling mouth 16.
Described elemental sulfur settling zone I, aerobe desulfurization zone II, anaerobic organism desulfurization zone III volume ratio are 1: 4: 6～8.
Described taper desulphurization bucket 3 taperings are 60 °, and bottom of device and base 21 are 45 ° inclined-plane.
Described air register 18 lower end level heights are lower than overflow pipe 6 3～6cm, and described circulation deflector 19 upper end level heights are lower than overflow pipe 6 6～8cm.
Described biologic packing material layer A12 and biologic packing material layer B14 volume ratio are 1: 1.
Described liquid distributor A13 is 6～12cm with liquid distributor B15 apart from the distance on the biologic packing material layer B14 apart from the distance of biologic packing material layer A12 upper end, and the liquid level of end distance aerobe desulfurization zone II distance is 20～30cm under the described biologic packing material layer A12.
To be provided with three taperings be 60 ° taper desulphurization bucket 3 elemental sulfur settling zone I bottom among the present invention, helps the elemental sulfur deposition; Bottom of device and base 21 are 45 ° inclined-plane, have reduced the generation in aerobe desulfurization zone II dead band.
Aerobe desulfurization zone II adopts the Contiuum type structure and is provided with air register 18, has stopped contacting of sulphur-containing exhaust gas and oxygen fully, has guaranteed that the safety of biological desulphurization is carried out.
Circulation deflector 19 is submerged under the liquid level, has promoted the muddy water complete mixing flow effect of aerobe desulfurization zone II.
Nutrient solution pH value through 10 inputs of nutrient solution input pipe maintains 7.5～8.0, makes it to be fit to the growth of desulfurizing bacteria.
Through the control aeration rate, makes dissolved oxygen probe 11 dissolved oxygen concentration of surveying maintain 0.08～0.10mg/L in the aerobe desulfurization zone II, prevent that under the excessive situation of oxygen sulfide is oxidized to sulfate and influences the efficient of desulfurization.
Be filled with the soft-filler that is beneficial to the microorganism colonization growth in biologic packing material layer A12, the biologic packing material layer B14, and adopt two-part to fill, prevent that filler from stopping up, reduce the short circuit and the dead band of packing layer, be convenient to clean, change filler simultaneously.
Liquid distributor is 6～12cm apart from the distance of corresponding biologic packing material layer upper end, and the liquid level of end distance aerobe desulfurization zone II distance is 20～30cm under the biologic packing material layer A12.
Anaerobic organism desulfurization zone III adopts the mode of two sections cloth liquid, helps the even distribution of sulfur-bearing spray liquid.
The method of operation of the present invention is: air gets into pipe through air and gets into aerobe desulfurization zone II and be dissolved with H
2The spray liquid reaction of S gas, nutrient solution is by 10 inputs of nutrient solution input pipe, and reacted air is discharged by air discharge ports 8.Utilize the liquid level of the aerobic biological desulphurization of spill box 5 controls district II; Effectively prevent to make liquid flow into anaerobic organism desulfurization zone III because of liquid level is too high or overflow outside the bio-desulfurization device; Also effectively prevented to make air register 18 and circulation deflector 19 lose due effect because of liquid level is low excessively; Cause air to get into anaerobic organism desulfurization zone III, bring potential safety hazard.Utilize alkali lye input pipe 9 to regulate the pH value that is fit to the desulfurizing bacteria growth metabolism, and,, make the H in the waste gas through regulating aeration rate enhanced biological sweetening process through the dissolved oxygen content in dissolved oxygen probe 11 supervising devices
2S and oxygen are converted into elemental sulfur under the effect of desulfurizing bacteria.Among the anaerobic organism desulfurization zone III, the sulphur-containing exhaust gas that sulphur-containing exhaust gas entering pipe 17 gets into from the bottom constantly rises, contact with the spray liquid of downward spray is reverse, and under the effect of the desulfurizing bacteria that grows in biologic packing material layer A12, biologic packing material layer B14, most of H
2S gas is able to remove and be converted into elemental sulfur in this zone.Not removed few section H
2S gas is dissolved in spray droplet and drops down onto aerobe desulfurization zone II, and further oxidation by air is removed, and the waste gas after the purification is discharged by gas sampling mouth 16.The elemental sulfur that aerobe desulfurization zone II and anaerobic organism desulfurization zone III produce falls into elemental sulfur settling zone I and is discharged by sulphur discharging pipeline 2.
This shows that elemental sulfur of the present invention settling zone I is provided with three taper desulphurization buckets 3, be convenient to elemental sulfur and reclaim; The aerobic desulfurization reaction zone II of Contiuum type is provided with air register 18, and air register 18 is immersed in below the liquid level, makes air and sulphur-containing exhaust gas isolated fully, has stopped to sneak into the potential safety hazard that sulphur-containing exhaust gas causes because of air; The complete mixing flow effect that circulation deflector 19 promotes aerobe desulfurization zone II is set, strengthened should the zone interphase mass transfer; The dissolved oxygen content of dissolved oxygen probe 11 all-the-way tracking aerobe desulfurization zone II is installed, is controlled aeration rate in real time, realize the desulfurization of sulphur-containing exhaust gas high-performance bio; Anaerobic organism desulfurization zone III adopts the biological packed layer structure of two-part, prevents that filler from stopping up, and reduces the short circuit and the dead band of packing layer, is convenient to clean, change filler simultaneously; Whole purifier integrates the cultivation and the exhuast gas desulfurization of desulfurizing bacteria, and is rational in infrastructure and succinct, easy to process, easy to utilize.
Claims (6)
1. Contiuum type purifying sulphur-containing waste device; Comprise elemental sulfur settling zone (I), aerobe desulfurization zone (II), anaerobic organism desulfurization zone (III), it is characterized in that: described purifier is followed successively by elemental sulfur settling zone (I), aerobe desulfurization zone (II), anaerobic organism desulfurization zone (III) from the bottom to top; Described elemental sulfur settling zone (I) comprises base (21), sulphur discharging pipeline (2), taper desulphurization bucket (3); Described base (21) upper surface is fixed with some taper desulphurization buckets (3); Described taper desulphurization bucket (3) bottom portion of groove is provided with sulphur discharging pipeline (2), and both sides, described elemental sulfur settling zone (I) are fixed with reinforcement (1); Described aerobe desulfurization zone (II) comprises air aeration device (4), spill box (5), circulation deflector (19), air register (18); Described aerobe desulfurization zone (II) left side wall bottom is provided with air aeration device (4); The middle part is provided with communicating pipe (7); Be provided with spill box (5) outside described communicating pipe (7); Described spill box (5) top one side is provided with overflow pipe (6), and described aerobe desulfurization zone (II) bosom is provided with circulation deflector (19), and right side wall is provided with return duct (20); Described circulation deflector (19) top is provided with air register (18); Described circulation deflector (19) upper end tilts and is relative with air register (18), and left side, described aerobe desulfurization zone (II) upper end is provided with air discharge ports (8), alkali lye input pipe (9), nutrient solution input pipe (10), dissolved oxygen probe (11) successively, and the top, right side connects anaerobic organism desulfurization zone (III); Described anaerobic organism desulfurization zone (III) is followed successively by biologic packing material layer A (12), liquid distributor A (13), biologic packing material layer B (14), liquid distributor B (15) from the bottom to top; Described biologic packing material layer A (12) below one side feeds sulphur-containing exhaust gas and gets into pipe (17), and described anaerobic organism desulfurization zone (III) top is provided with gas sampling mouth (16).
2. a kind of Contiuum type purifying sulphur-containing waste device as claimed in claim 1 is characterized in that: described elemental sulfur settling zone (I), aerobe desulfurization zone (II), anaerobic organism desulfurization zone (III) volume ratio are 1: 4: 6～8.
3. a kind of Contiuum type purifying sulphur-containing waste device as claimed in claim 1 is characterized in that: described taper desulphurization bucket (3) tapering is 60 °, and bottom of device and base (21) are 45 ° inclined-plane.
4. a kind of Contiuum type purifying sulphur-containing waste device as claimed in claim 1; It is characterized in that: described air register (18) lower end level height is lower than overflow pipe (6) 3～6cm, and described circulation deflector (19) upper end level height is lower than overflow pipe (6) 6～8cm.
5. a kind of Contiuum type purifying sulphur-containing waste device as claimed in claim 1 is characterized in that: described biologic packing material layer A (12) is 1: 1 with biologic packing material layer B (14) volume ratio.
6. a kind of Contiuum type purifying sulphur-containing waste device as claimed in claim 1; It is characterized in that: described liquid distributor A (13) is 6～12cm with liquid distributor B (15) apart from the distance on the biologic packing material layer B (14) apart from the distance of biologic packing material layer A (12) upper end, and described biologic packing material layer A (12) the liquid level distance of end distance aerobe desulfurization zone (II) down is 20～30cm.
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|---|---|---|---|
| CN201210129510.XA CN102631837B (en) | 2012-04-27 | 2012-04-27 | Integrated type sulfur-containing waste gas purifying device |
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| CN103071378A (en) * | 2013-01-11 | 2013-05-01 | 中国科学院广州能源研究所 | Two-stage biological desulfuration device of marsh gas |
| CN103331077A (en) * | 2013-07-02 | 2013-10-02 | 无锡天惠塑机有限公司 | Filler absorbing tower |
| CN104609651A (en) * | 2015-01-06 | 2015-05-13 | 东华大学 | Wastewater advanced treatment system for large-scale pig farms |
| CN108554140A (en) * | 2018-04-02 | 2018-09-21 | 浙江金锅环保科技有限公司 | A kind of flue gas biological desulphurization denitration dust collecting method |
| CN111632485A (en) * | 2020-05-11 | 2020-09-08 | 广东石油化工学院 | Biogas purification device based on biological desulfurization technology and purification method thereof |
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| CN108554140A (en) * | 2018-04-02 | 2018-09-21 | 浙江金锅环保科技有限公司 | A kind of flue gas biological desulphurization denitration dust collecting method |
| CN111632485A (en) * | 2020-05-11 | 2020-09-08 | 广东石油化工学院 | Biogas purification device based on biological desulfurization technology and purification method thereof |
| CN111632485B (en) * | 2020-05-11 | 2024-04-05 | 广东石油化工学院 | Biogas purification device and method based on biological desulfurization technology |
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| CN102631837B (en) | 2014-08-13 |
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